81315225

素因数分解:

$3^3\times 5^2\times {\mathrm{179}}^1\times {\mathrm{673}}^1$

素因数の和:871

約数の個数: 48

約数和(自身を含む): 150436800

約数和(自身を除く): 69121575

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 179, 225, 537, 673, 675, 895, 1611, 2019, 2685, 3365, 4475, 4833, 6057, 8055, 10095, 13425, 16825, 18171, 24165, 30285, 40275, 50475, 90855, 120467, 120825, 151425, 361401, 454275, 602335, 1084203, 1807005, 3011675, 3252609, 5421015, 9035025, 16263045, 27105075, 81315225]

約数ペア:

[(1, 81315225), (3, 27105075), (5, 16263045), (9, 9035025), (15, 5421015), (25, 3252609), (27, 3011675), (45, 1807005), (75, 1084203), (135, 602335), (179, 454275), (225, 361401), (537, 151425), (673, 120825), (675, 120467), (895, 90855), (1611, 50475), (2019, 40275), (2685, 30285), (3365, 24165), (4475, 18171), (4833, 16825), (6057, 13425), (8055, 10095)]